Aquastar® combined coulometric reagents have long since proved to be excellently suited for water determinations according to the coulometric Karl Fischer method. The CombiCoulomat fritless can be used universally for cells with or without diaphragm. Both reagents, CombiCoulomat frit and CombiCoulomat fritless, are free from chlorinated hydrocarbons. Aquastar® coulometric reagents CombiCoulomat frit and CombiCoulomat fritless are comparable to the volumetric one component reagents. All reaction components are contained in one solution, making handling easy. Compared with volumetric reagents, coulometric reagents do not contain iodine, but iodide and the iodine required for the Karl Fischer reaction to take place develops through electrochemical oxidation. The coulometric method is primarily used for the determination of low water contents (1%).

• No confusion between anode and cathode cell solutions, since only one solution is required
• Very accurate and reproducible results
• Cell very rapidly ready for use after the first filling
• For samples with low water contents – below 1%
• Consistent quality for comparable results